CONTROLLED REFRIGERANT SUPPLY DEVICE Russian patent published in 2023 - IPC F17C9/02 F25D3/10 

FIELD: cryogenic engineering.

SUBSTANCE: devices for maintaining the temperature regime of cooled objects. Novelty of the device is the supply of a supply tube, coaxially located and open into the gas space of the filled Dewar’s flask, a collector tube with fittings for connecting electromagnetic valves for controlling the flow of refrigerant, a movable coupling-regulator of the throughput of the hole in the supply tube open to the gas space of the Dewar’s flask and a fitting connected with a thermally insulated transport hose connected to it for transferring the refrigerant to the cooled object, as well as making a heater located at its end, immersed in a Dewar’s flask, in the form of a disk and installing a sensor for the minimum permissible level of liquid refrigerant in the immediate vicinity of the heater. All main elements of the device, except for the transport sleeve and elements immersed in a Dewar’s flask, are housed in a compact housing.

EFFECT: expanding the functionality of the device while simultaneously increasing the reliability and safety of operation, reducing the time for hermetically sealed installation of the device on a Dewar’s flask, and simplifying the connection to the cooled object.

1 cl, 2 dwg